<template>
  <div>
    <el-form ref="deptForm" label-width="120px" :rules="rules" :model="form">
      <el-form-item label="部门名称" prop="name">
        <el-input v-model="form.name" style="width:80%" placeholder="1-50个字符" />
      </el-form-item>
      <el-form-item label="部门编码" prop="code">
        <el-input v-model="form.code" style="width:80%" placeholder="1-50个字符" />
      </el-form-item>
      <el-form-item label="部门负责人" prop="manager">
        <el-select v-model="form.manager" style="width:80%" placeholder="请选择">
          <el-option v-for="item in employees" :key="item.id" :value="item.username" :label="item.username" />
          <!-- <el-option value="1" label="小美丽" />
          <el-option value="2" label="大漂亮" /> -->
        </el-select>
      </el-form-item>
      <el-form-item label="部门介绍" prop="introduce">
        <el-input v-model="form.introduce" style="width:80%" placeholder="1-300个字符" type="textarea" :rows="3" />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" size="small" @click="hSubmit">确定</el-button>
        <el-button size="small" @click="hCancel">取消</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import { getEmployeeSimple } from '@/api/employees'
import { addDepartments, getDepartDetail, updateDepartment } from '@/api/departments'
export default {
  props: {
    id: {
      type: String,
      required: true
    },
    isEdit: {
      type: Boolean,
      required: true
    },
    originList: {
      type: Array,
      required: true
    }
  },
  data() {
    // 解决部门编码相同问题
    const validCode = (rule, value, callback) => {
      console.log('validCode', value)
      let existCodeList = []
      if (this.isEdit) {
        console.log('现在是编辑状态，正在编辑的id是', this.id)
        existCodeList = this.originList.filter(item => item.id !== this.id).map(item => item.code)
      } else {
        existCodeList = this.originList.map(item => item.code)
      }
      console.log('existCodeList', existCodeList)
      existCodeList.includes(value) ? callback(new Error('编码' + value + '已经存在')) : callback()
    }
    // 解决同级部门名字相同问题
    const validName = (rule, value, callback) => {
      let existNameList = []
      console.log('validName.... , 当前被校验的名字是', value)

      // 如果是编辑，则被占用的名字 = 兄弟-自己
      if (this.isEdit) {
        // 1. 找到当前被编辑的元素
        const dept = this.originList.find(item => item.id === this.id)
        // 2. 取出pid(它的父级是谁)
        const pid = dept.pid
        // 3. 过滤： 同一个父级，不包括自己； map： 只要需要名字
        existNameList = this.originList.filter(item => item.pid === pid && item.id !== this.id).map(item => item.name)
        console.log('被占用的名字列表', existNameList)
      } else {
        existNameList = this.originList.filter(item => item.pid === this.id).map(item => item.name)
        console.log('被占用的名字列表', existNameList)
      }
      console.log('被占用的名字列表', existNameList)
      if (existNameList.includes(value)) {
        callback(new Error('名字' + value + '已经被占用了'))
      } else {
        callback()
      }
    }
    return {
      form: {
        name: '', // 部门名称
        code: '', // 部门编码
        manager: '', // 部门管理者
        introduce: '' // 部门介绍
      },
      rules: {
        name: [
          { required: true, message: '部门名称不能为空', trigger: 'blur' },
          { min: 1, max: 50, message: '部门名称要求1-50个字符', trigger: 'blur' },
          { validator: validName, trigger: 'blur' }
        ],
        code: [
          { required: true, message: '部门编码不能为空', trigger: 'blur' },
          { min: 1, max: 50, message: '部门编码要求1-50个字符', trigger: 'blur' },
          { validator: validCode, trigger: 'blur' }
        ],
        manager: [
          { required: true, message: '部门管理者不能为空', trigger: 'blur' }
        ],
        introduce: [
          { required: true, message: '部门介绍不能为空', trigger: 'blur' }
        ]
      },
      employees: []
    }
  },
  // watch: {
  //   'id': function(newVal, oldVal) {
  //     console.log('id变了！新值：', newVal, '旧值', oldVal)
  //     // this.loadDepartmentDetailById()
  //     this.loadDetail()
  //   }
  // },
  created() {
    this.loadEmployee()
    this.laodDetail()
  },
  methods: {
    // 确定
    hSubmit() {
      // 表单校验
      this.$refs.deptForm.validate(valid => {
        if (valid) {
          this.isEdit ? this.doEdit() : this.doAdd()
        }
      })
    },
    // 取消
    hCancel() {
      this.$emit('close')
    },
    async loadEmployee() {
      const res = await getEmployeeSimple()
      console.log('员工信息', res)
      this.employees = res.data
    },
    async doAdd() {
      const params = { ...this.form, pid: this.id }
      console.log(params)
      const res = await addDepartments(params)
      console.log(res)
      this.$message.success(res.message)
      this.$emit('success')
    },
    async doEdit() {
      try {
        await updateDepartment(this.form)
        this.$message.success('修改成功')
        this.$emit('success')
      } catch (error) {
        console.log(error)
        this.$message.error(error)
      }
    },
    async laodDetail() {
      if (this.isEdit) {
        const res = await getDepartDetail(this.id)
        console.log(res, '部门详情')
        this.form = res.data
      }
    },
    restForm() {
      this.$refs.deptForm.resetFields()
    }
  }
}
</script>
